下人孔位于車輛頂部，主要起到設備檢修及人孔放料的作用。

The manhole is located on the top of the vehicle and mainly serves for equipment maintenance and material discharge through the manhole.

一般情況下，車輛多采用和罐車連接的方式打料。

In general, vehicles are often connected to tank trucks for feeding.

但也有采用上部從人孔灌裝物料的情況，如需要從上部人孔灌裝物料，需要注意以下幾點：

But there are also cases where materials are filled from the upper manhole. If it is necessary to fill materials from the upper manhole, the following points should be noted:

（1）、人孔打開后注意保存好螺栓，避免丟失

(1) After opening the manhole, pay attention to saving the bolts to avoid loss

（2）、多留意天氣預報，如有雨，應提前將人孔密封螺栓重新緊固到位。如怕緊固不到位，可選擇在人孔上方再包裝一層防雨布。

(2) Pay more attention to the weather forecast, and in case of rain, tighten the manhole sealing bolts in place in advance. If you are afraid that the fastening may not be in place, you can choose to package an additional layer of rainproof cloth above the manhole.

（3）、雨后或長期人孔灌裝施工，應多留意車廂內是否有物料板結情況，如發(fā)現存在物料板結情況，應及時清理。

(3) After rain or long-term manhole filling construction, attention should be paid to whether there is material compaction inside the carriage. If any material compaction is found, it should be cleaned up in a timely manner.

（4）、人孔經常性的打開，會造成蓋處的密封膠條密封不到位或脫落，應及時檢查更換。

(4) Frequent opening of the manhole can cause the sealing strip at the cover to not seal properly or fall off. It should be checked and replaced in a timely manner.

（5）、攪拌站物料存儲罐內水泥長時間存儲有可能會產生物料板結塊，從人孔放料時一定要特別留意，同時不要敲擊攪拌站物料存儲罐體，如在裝料的過程中發(fā)現有板結塊掉落在車廂內，應立即停止加料，并將板結塊取出。

(5) Long term storage of cement in the material storage tank of the mixing plant may result in the formation of biological material board clumps. Special attention must be paid when discharging from the manhole, and the material storage tank of the mixing plant should not be knocked. If any board clumps fall into the carriage during the loading process, feeding should be stopped immediately and the board clumps should be removed.

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